code: def test_quantile_fold_default_value():
      # test case 1: Test quantiles, with fold default = 0.05
      transformer = OutlierTrimmer(capping_method="quantiles")
      assert transformer.fold == 0.05
  
file_path: feature_engine/tests/test_outliers/test_outlier_trimmer.py
imports: import pandas
  import pytest
  from feature_engine.outliers import OutlierTrimmer
label_desc: Use image node_id 6 for calling a global function with example usage: test_quantile_fold_default_value() without return types